Spring cotton sowing technology
1. Select good seeds, scientifically treat them before sowing 1. Selected varieties. Choosing high-quality cotton seeds is a prerequisite for ensuring complete, uniform and strong seedlings. Varieties with good ecological adaptability, meeting production needs, and good market prospects are suitable for planting in most cotton fields. 2. Sun seeds. Cotton seeds without lint-free coating shall be sun-dried 15-20 days before sowing. 3. Medicine seed dressing. In order to prevent the harm of diseases and insects, the cotton seeds without lint-free coating can be soaked and dressed with chemicals. Pay attention to the selection of seeds before sowing, do a good job of accelerating germination and dressing to facilitate the emergence of seedlings, and achieve the purpose of seedlings. 4. Encourage the direct use of lint-free coated cotton seeds. The lint-free and coated seeds are neat and consistent, with a high rate of healthy seeds and high germination rates. 2. Create soil moisture, maintain soil fertility and improve soil fertility 1. Create moisture conservation, fine arable land. Since last winter, the precipitation has been low. The cotton-growing areas of saline-alkali soils should be pressed with fresh water in time, and the soil should be finely prepared at the same time as the soil moisture can be preserved. Irrigation should generally be carried out 15-20 days before cotton sowing to facilitate soil warming. 2. Scientific fertilization to improve soil fertility. One is to increase the application of organic fertilizers to improve the physical and chemical properties of the soil. The second is the scientific application of chemical fertilizers. The third is soil testing and fertilization. The fourth is to promote the application of slow and controlled-release fertilizers and the application of seed fertilizer simultaneous sowing technology to reduce labor input and simplify production links. 3. Sowing in the right time, increasing the amount of sowing, and the depth of sowing to ensure the quality of sowing 1. Sowing seeds at the right time and moisture. Sowing at the right time and moisture content is the key to the first seedling of cotton. Sowing too early, cotton seeds are covered in the soil for too long and the seeds are easy to rot, and too late sowing delays the growth process. When the 5cm ground temperature stabilizes through 14℃, the optimal sowing period will be entered, and the saline-alkali cotton field can be postponed to the end of April. Suitable moisture sowing is to strive for the field water holding capacity of about 75% when sowing. The sowing dates of different varieties should be adjusted appropriately. Generally, mid-maturing varieties should be sown in mid-April; mid-early maturing varieties should be sown in mid-to-late April; short-season cotton varieties should be sown between May 10 and 20. In this range, the sowing period should be subject to changes in weather and moisture, and generally choose the cold tail and warm head. 2. Appropriate increase in seeding volume. Proper sowing is an important part of preserving seedlings and raising strong seedlings. As far as possible, semi-precision and precise seeding should be used for velvet-coated cotton seeds, and the principles of suitable moisture sowing, suitable late sowing, appropriate deep sowing, and appropriate increase in sowing should be followed; late sowing is to shorten the emergence time and reduce rottenness. The rate of seeding and rotten buds is generally sown from April 16th to 26th; appropriate deep sowing is to strive to control the sowing depth at 2.5-3 cm; an appropriate increase in the sowing rate is to increase the sowing rate per acre by 0.1-0.2 times compared with the normal year. Fourth, standardize seeding methods Plastic film mulching cultivation. Loam, clay, saline-alkaline soil with good soil moisture should be cultivated with plastic film mulching. 5. Post-broadcasting inspection and supporting remedial measures After the broadcast, it is necessary to check in time, and solve the problems in time. If the wool seed is sowed in rainy, low temperature, the seeds are badly rotted. If there are less than 5 to 8 seeds per meter per row, the seeds should be replaced as soon as possible. The cotton seeds with light-seed and lint-free coating can be rescued by timely measures according to the mildew condition of the cotton seeds. The replanting time of mid-maturing varieties shall not be later than May 5; if the seeds are falling dry, if the soil below is wet, the method of suppressing and increasing moisture can be adopted. If the seeds are dry soil above and below, you can pour the head water and the amount of watering. It should not be too large when the water seeps around the seeds. After watering, the ridges should be lifted to break the bag (such as the water seed bag); the hard crust should be broken in time after the rain after sowing, and the hug should be hug in time after heavy rain or heavy rain. Draw. 6. Seedling protection management measures 1. Check for omissions and fill vacancies. When the seedlings are short of about 30%, transplant them as soon as possible to make up. Cotton seedlings that do not produce true leaves can be transplanted with sprouts with seedling age within 7 days. Seedlings with true leaves should be transplanted with soil. The soil platform should be larger and not scattered. After planting, water should be less; saline soil, wheat In order to maintain the density, double seedlings can be kept in the area with cotton and seedling shortage. 2. Cultivate strong seedlings. According to the appearance of cotton seedlings, measures should be taken on thin and weak plots in a timely manner. When the cotton seedlings are present with 1 to 2 true leaves, a vegetative plant growth promoter can be used for a foliar spray to promote healthy growth. At the same time, it is necessary to cultivate and promote roots. tie. 3. Prevention of diseases and pests. Diseases in the cotton seedling stage are mainly caused by cotton seeds, low temperature and high humidity. Control measures: First, select disease-resistant varieties; second, use lint-free coated cotton seeds; third, apply more organic fertilizers in cotton fields, and pay attention to the rational use of potassium fertilizer; fourth, strengthen cotton field management, early setting seedlings to promote seedlings, and diligent tillage to promote roots Down the strong seedlings. Drain water in time when it rains, cultivate in time after rain, break soil compaction, loosen the soil, loose soil moisture and dry roots; the fifth is chemical control, if cotton seedlings are unearthed in low temperature and rain, if the leaf disease is serious, 40% carbendazim or 65 can be used. %Dysenzinc WP 500-800 times solution for foliar spray control, and 1:2:200 times Bordeaux solution or 1‰ "401" agent can also be used to spray seedlings for 1 to 2 times. The sixth is to prevent and control pests, mainly cutworms, red spiders, and cotton aphids. Timely forecast and control should be carried out. The use of five highly toxic pesticides such as methamidophos in production is strictly prohibited to ensure the quality and safety of agricultural products. Weeds should be removed in time to improve the light conditions of cotton plants. Cotton farmers do a good job of planting and raising seedlings according to the actual conditions of the cotton field, and cultivate large, robust and strong seedlings with thick stems, dense nodes, and pest-free, laying a solid foundation for achieving the goal of early maturity, high quality, high efficiency and high yield of cotton. Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone Fish Fillet Fish Fillet,Crusted Cod,Hake Fillets For Sale,Salmon Fish Fillet ZHEJIANG EVERNEW SEAFOOD CO.,LTD , https://www.evernewseafood.com